A197501 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4.

1, 45, 526, 4447, 58434, 755338, 9343735, 115041017, 1444324039, 18148792772, 226805049125, 2837702507896, 35532382009820, 444833549598339, 5568581339404147, 69708374269567517, 872630491310203892

Offset

1,2

Comments

Every 0 is next to 0 2's, every 1 is next to 1 3's, every 2 is next to 2 1's, every 3 is next to 3 1's, every 4 is next to 4 0's

Column 6 of A197503

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions containing all values 0 to 4 for n=4
..0..1..0..0..0..0....2..1..0..0..0..0....2..1..0..1..3..1....0..0..0..0..0..0
..1..3..1..0..4..0....1..3..1..0..4..0....1..3..0..0..1..0....0..0..0..0..1..0
..1..3..1..0..0..0....1..3..1..1..0..0....0..1..0..4..0..0....0..4..0..0..3..1
..2..1..0..0..0..0....0..1..1..3..1..0....0..0..0..0..0..0....0..0..0..0..1..2

Crossrefs

Sequence in context: A147808 A190417 A093529 * A283116 A223047 A147842

Adjacent sequences: A197498 A197499 A197500 * A197502 A197503 A197504

Keyword

nonn

Author

R. H. Hardin, Oct 15 2011

Status

approved